In 1960, abortion was extremely rare, even though The Pill was not available. One hears stories of women who were "damaged" or died as a result of botched abortions, but those numbers were microscopic. People - mainly young women - understood the purpose and likely outcome of unprotected sexual intercourse and acted accordingly. There was the occasional "shotgun" wedding, most of which lasted a lifetime.
Now, women claim some sort of "right" to get an abortion, and if the Sovereign does not affirm that "right" they are not "free" to live their lives and will be "forced to carry unwanted babies to term." The question of whether an abortion is tantamount to killing a baby - and it IS a question - is not addressed, or truth be known, cared about. The question of why women today are unable to "act accordingly" is not asked. It is presumed that fecund women will continue to copulate as before, even when abortion is made much more difficult.
The Left is evil. There is no other explanation.